src/mesa/drivers/dri/intel/intel_tex_copy.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "main/mtypes.h"
  29 #include "main/enums.h"
  30 #include "main/image.h"
  31 #include "main/teximage.h"
  32 #include "main/mipmap.h"
  33 #include "swrast/swrast.h"
  34
  35 #include "intel_screen.h"
  36 #include "intel_context.h"
  37 #include "intel_batchbuffer.h"
  38 #include "intel_buffers.h"
  39 #include "intel_mipmap_tree.h"
  40 #include "intel_regions.h"
  41 #include "intel_fbo.h"
  42 #include "intel_tex.h"
  43 #include "intel_blit.h"
  44
  45 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  46
  47 /**
  48  * Get the intel_region which is the source for any glCopyTex[Sub]Image call.
  49  *
  50  * Do the best we can using the blitter.  A future project is to use
  51  * the texture engine and fragment programs for these copies.
  52  */
  53 static const struct intel_region *
  54 get_teximage_source(struct intel_context *intel, GLenum internalFormat)
  55 {
  56    struct intel_renderbuffer *irb;
  57
  58    DBG("%s %s\n", __FUNCTION__,
  59        _mesa_lookup_enum_by_nr(internalFormat));
  60
  61    switch (internalFormat) {
  62    case GL_DEPTH_COMPONENT:
  63    case GL_DEPTH_COMPONENT16:
  64       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  65       if (irb && irb->region && irb->region->cpp == 2)
  66          return irb->region;
  67       return NULL;
  68    case GL_DEPTH24_STENCIL8_EXT:
  69    case GL_DEPTH_STENCIL_EXT:
  70       irb = intel_get_renderbuffer(intel->ctx.ReadBuffer, BUFFER_DEPTH);
  71       if (irb && irb->region && irb->region->cpp == 4)
  72          return irb->region;
  73       return NULL;
  74    case GL_RGBA:
  75    case GL_RGBA8:
  76       return intel_readbuf_region(intel);
  77    case GL_RGB:
  78       if (intel->ctx.Visual.rgbBits == 16)
  79          return intel_readbuf_region(intel);
  80       return NULL;
  81    default:
  82       return NULL;
  83    }
  84 }
  85
  86
  87 static GLboolean
  88 do_copy_texsubimage(struct intel_context *intel,
  89                     GLenum target,
  90                     struct intel_texture_image *intelImage,
  91                     GLenum internalFormat,
  92                     GLint dstx, GLint dsty,
  93                     GLint x, GLint y, GLsizei width, GLsizei height)
  94 {
  95    GLcontext *ctx = &intel->ctx;
  96    struct gl_texture_object *texObj = intelImage->base.TexObject;
  97    const struct intel_region *src =
  98       get_teximage_source(intel, internalFormat);
  99
 100    if (!intelImage->mt || !src) {
 101       if (INTEL_DEBUG & DEBUG_FALLBACKS)
 102          fprintf(stderr, "%s fail %p %p\n",
 103                  __FUNCTION__, intelImage->mt, src);
 104       return GL_FALSE;
 105    }
 106
 107    intelFlush(ctx);
 108    LOCK_HARDWARE(intel);
 109    {
 110       drm_intel_bo *dst_bo = intel_region_buffer(intel,
 111                                                  intelImage->mt->region,
 112                                                  INTEL_WRITE_PART);
 113       GLuint image_offset = intel_miptree_image_offset(intelImage->mt,
 114                                                        intelImage->face,
 115                                                        intelImage->level);
 116       const GLint orig_x = x;
 117       const GLint orig_y = y;
 118       GLshort src_pitch;
 119
 120       /* Update dst for clipped src.  Need to also clip the source rect. */
 121       dstx += x - orig_x;
 122       dsty += y - orig_y;
 123
 124       /* Can't blit to tiled buffers with non-tile-aligned offset. */
 125       if (intelImage->mt->region->tiling != I915_TILING_NONE &&
 126           (image_offset & 4095) != 0) {
 127          UNLOCK_HARDWARE(intel);
 128          return GL_FALSE;
 129       }
 130
 131       if (ctx->ReadBuffer->Name == 0) {
 132          /* reading from a window, adjust x, y */
 133          __DRIdrawablePrivate *dPriv = intel->driDrawable;
 134          y = dPriv->y + (dPriv->h - (y + height));
 135          x += dPriv->x;
 136
 137          /* Invert the data coming from the source rectangle due to GL
 138           * and hardware disagreeing on where y=0 is.
 139           *
 140           * It appears that our offsets and pitches get mangled
 141           * appropriately by the hardware, and we don't need to adjust them
 142           * on our own.
 143           */
 144          src_pitch = -src->pitch;
 145       } else {
 146          /* reading from a FBO, y is already oriented the way we like */
 147          src_pitch = src->pitch;
 148       }
 149
 150       if (!intelEmitCopyBlit(intel,
 151                              intelImage->mt->cpp,
 152                              src_pitch,
 153                              src->buffer,
 154                              0,
 155                              src->tiling,
 156                              intelImage->mt->pitch,
 157                              dst_bo,
 158                              image_offset,
 159                              intelImage->mt->region->tiling,
 160                              x, y, dstx, dsty, width, height,
 161                              GL_COPY)) {
 162          UNLOCK_HARDWARE(intel);
 163          return GL_FALSE;
 164       }
 165    }
 166
 167    UNLOCK_HARDWARE(intel);
 168
 169    /* GL_SGIS_generate_mipmap */
 170    if (intelImage->level == texObj->BaseLevel && texObj->GenerateMipmap) {
 171       intel_generate_mipmap(ctx, target, texObj);
 172    }
 173
 174    return GL_TRUE;
 175 }
 176
 177
 178 static void
 179 intelCopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
 180                     GLenum internalFormat,
 181                     GLint x, GLint y, GLsizei width, GLint border)
 182 {
 183    struct gl_texture_unit *texUnit =
 184       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 185    struct gl_texture_object *texObj =
 186       _mesa_select_tex_object(ctx, texUnit, target);
 187    struct gl_texture_image *texImage =
 188       _mesa_select_tex_image(ctx, texObj, target, level);
 189    int srcx, srcy, dstx, dsty, height;
 190
 191    if (border)
 192       goto fail;
 193
 194    /* Setup or redefine the texture object, mipmap tree and texture
 195     * image.  Don't populate yet.
 196     */
 197    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
 198                           width, border,
 199                           GL_RGBA, CHAN_TYPE, NULL,
 200                           &ctx->DefaultPacking, texObj, texImage);
 201    srcx = x;
 202    srcy = y;
 203    dstx = 0;
 204    dsty = 0;
 205    height = 1;
 206    if (!_mesa_clip_copytexsubimage(ctx,
 207                                    &dstx, &dsty,
 208                                    &srcx, &srcy,
 209                                    &width, &height))
 210       return;
 211
 212    if (!do_copy_texsubimage(intel_context(ctx), target,
 213                             intel_texture_image(texImage),
 214                             internalFormat, 0, 0, x, y, width, height))
 215       goto fail;
 216
 217    return;
 218
 219  fail:
 220    _swrast_copy_teximage1d(ctx, target, level, internalFormat, x, y,
 221                            width, border);
 222 }
 223
 224
 225 static void
 226 intelCopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
 227                     GLenum internalFormat,
 228                     GLint x, GLint y, GLsizei width, GLsizei height,
 229                     GLint border)
 230 {
 231    struct gl_texture_unit *texUnit =
 232       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 233    struct gl_texture_object *texObj =
 234       _mesa_select_tex_object(ctx, texUnit, target);
 235    struct gl_texture_image *texImage =
 236       _mesa_select_tex_image(ctx, texObj, target, level);
 237    int srcx, srcy, dstx, dsty;
 238
 239    if (border)
 240       goto fail;
 241
 242    /* Setup or redefine the texture object, mipmap tree and texture
 243     * image.  Don't populate yet.
 244     */
 245    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
 246                           width, height, border,
 247                           GL_RGBA, CHAN_TYPE, NULL,
 248                           &ctx->DefaultPacking, texObj, texImage);
 249
 250    srcx = x;
 251    srcy = y;
 252    dstx = 0;
 253    dsty = 0;
 254    if (!_mesa_clip_copytexsubimage(ctx,
 255                                    &dstx, &dsty,
 256                                    &srcx, &srcy,
 257                                    &width, &height))
 258       return;
 259
 260    if (!do_copy_texsubimage(intel_context(ctx), target,
 261                             intel_texture_image(texImage),
 262                             internalFormat, 0, 0, x, y, width, height))
 263       goto fail;
 264
 265    return;
 266
 267  fail:
 268    _swrast_copy_teximage2d(ctx, target, level, internalFormat, x, y,
 269                            width, height, border);
 270 }
 271
 272
 273 static void
 274 intelCopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
 275                        GLint xoffset, GLint x, GLint y, GLsizei width)
 276 {
 277    struct gl_texture_unit *texUnit =
 278       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 279    struct gl_texture_object *texObj =
 280       _mesa_select_tex_object(ctx, texUnit, target);
 281    struct gl_texture_image *texImage =
 282       _mesa_select_tex_image(ctx, texObj, target, level);
 283    GLenum internalFormat = texImage->InternalFormat;
 284
 285    /* XXX need to check <border> as in above function? */
 286
 287    /* Need to check texture is compatible with source format.
 288     */
 289
 290    if (!do_copy_texsubimage(intel_context(ctx), target,
 291                             intel_texture_image(texImage),
 292                             internalFormat, xoffset, 0, x, y, width, 1)) {
 293       _swrast_copy_texsubimage1d(ctx, target, level, xoffset, x, y, width);
 294    }
 295 }
 296
 297
 298 static void
 299 intelCopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
 300                        GLint xoffset, GLint yoffset,
 301                        GLint x, GLint y, GLsizei width, GLsizei height)
 302 {
 303    struct gl_texture_unit *texUnit =
 304       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
 305    struct gl_texture_object *texObj =
 306       _mesa_select_tex_object(ctx, texUnit, target);
 307    struct gl_texture_image *texImage =
 308       _mesa_select_tex_image(ctx, texObj, target, level);
 309    GLenum internalFormat = texImage->InternalFormat;
 310
 311    /* Need to check texture is compatible with source format.
 312     */
 313
 314    if (!do_copy_texsubimage(intel_context(ctx), target,
 315                             intel_texture_image(texImage),
 316                             internalFormat,
 317                             xoffset, yoffset, x, y, width, height)) {
 318
 319       DBG("%s - fallback to swrast\n", __FUNCTION__);
 320
 321       _swrast_copy_texsubimage2d(ctx, target, level,
 322                                  xoffset, yoffset, x, y, width, height);
 323    }
 324 }
 325
 326
 327 void
 328 intelInitTextureCopyImageFuncs(struct dd_function_table *functions)
 329 {
 330    functions->CopyTexImage1D = intelCopyTexImage1D;
 331    functions->CopyTexImage2D = intelCopyTexImage2D;
 332    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
 333    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
 334 }